A Cam Positioner obtains angle data from an input device (e.g., an Encoder or Resolver) and uses preset ON/OFF angle settings to turn outputs ON and OFF. In food packing machines, for example, the Cam Positioner uses angle position data to control the timing of various mechanisms.The purpose of Cam Positioners is generally this type of timing control.

Pouch filler/packing machine

1.Control of the arm that supplies bags from the magazine

2.Control of the pump-driven cylinder

3.Control of filling a solid object with a specific amount of liquid

4.Control of the plunger and pump used to fill a body with a specific amount of liquid

Unlike Encoders, Resolvers are simply structured and have no electronic components so their performance is virtually unaffected by dust or vibration. This makes them highly reliable and environmentally resistant. Because they are brushless as well, they are maintenance free and their service life depends solely on the ball bearings.